JP2803010B2 - Spotlight - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spotlight.

2. Description of the Related Art Conventionally, a rear case having a light source unit integrally provided with a light bulb at the center of a reflector and a front case provided with a projection lens system are provided so as to be hinged, and the case is divided from the middle. Thus, a spotlight configured to easily perform various operations such as assembly, replacement, repair, and inspection of a built-in light source, a projection lens, a variable mask device, a cooling fan, and the like is disclosed in, for example, Japanese Patent Publication No. Hei 3-11481. Has already been proposed by the present inventor.

[Problems to be solved by the invention]

The problem in this case is that the spotlight case can be divided into a rear case having a light source section and a front case having a projection lens system so that the optical axis of the spotlight projection optical system can be divided. Since the light is divided into the light source unit and the projection lens system, there is a risk that the optical axes of the light source unit will not coincide with each other before and after the division and assembly, and there will be a problem that a clear projected image of the spotlight cannot be obtained. Further, the conventional spotlight is considerably large because the heat generated by the light source unit is cooled by a cooling fan, but in order to reduce the size, the cooling fan is removed and no other space is required. It is necessary to provide a cooling means in the case.

[Means for solving the problems]

Accordingly, the present invention relates to a spotlight comprising a rear case having a light source unit integrally provided with a light bulb at the center of the reflector and a front case having a projection lens system, which is provided in a splittable manner. A light source unit socket integrally provided with a light bulb at the center of the rear case is provided on the socket mounting plate of the rear case in a swinging manner by elastic support means, while a lamp house for covering the light source unit is provided in the front case, and the lamp house is provided. The present invention also provides a spotlight provided with a regulating frame which abuts on a reflecting mirror of the light source unit and regulates a projection optical axis of the light source unit to coincide with an optical axis of a projection lens system. Further, the present invention provides the above spotlight,
It is an object of the present invention to provide a spotlight characterized in that a socket of a light source unit is swingably supported on a socket mounting board by a leaf spring. Further, the present invention provides a spotlight in which a rear case having a light source unit integrally provided with a light bulb at the center of a reflector and a front case provided with a projection lens system are provided so as to be freely divided. While providing a lamp house that covers the light source unit, cooling holes are provided in the lamp house part that covers the top and bottom of the light source unit, and the mounting angle of the front case with the lamp house is changed by 90 degrees around the projection optical axis to the rear case. It is intended to provide a spotlight which is provided so as to be attachable.

[0004]

According to the spotlight of the present invention having the above structure, a rear case having a light source unit integrally provided with a bulb at the center of a reflecting mirror and a front case provided with a projection lens system are provided so as to be splittable. When the divided rear case and front case are assembled in a spotlight, the reflector of the light source unit having a socket swingably provided by a resilient support means on a socket mounting board of the rear case is provided by the light source of the front case. A rear case having a light source unit, and a projection lens system, because the projection optical axis of the light source unit is aligned with the optical axis of the projection lens system. In the case of a spotlight in which the front case and the front case are provided so as to be splittable, the optical axes thereof coincide before and after splitting and assembling, so that a clear projected image of the spotlight can be obtained.

Further, according to the present invention, in the above spotlight, when the socket of the light source is divided by supporting the socket of the light source section by a plate spring with a plate spring,
While the socket is safely supported, during assembly, the reflector provided in the socket resiliently abuts the regulating frame in the lamp housing of the front case, and the projection optical axis of the light source section securely contacts the optical axis of the projection lens system. In addition, they have the function of dissipating heat generated by the light source unit. Furthermore, the present invention provides a front case provided with a lamp house having cooling holes provided above and below the light source unit, which can be mounted on the rear case by changing the mounting angle by 90 degrees around the projection optical axis. When adjusting the light projection direction to the left or right by mounting the light on a wall or the like, the cooling holes may be located on the left and right of the light source, and a sufficient cooling effect cannot be obtained. By changing the mounting angle of the front case by 90 degrees around the projection optical axis with respect to the object to be projected, the cooling holes can be converted and arranged to always face the vertical direction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. Reference numeral 1 denotes a light source unit integrally provided with a light bulb at the center of a reflecting mirror. The light source unit 1 is arranged at a position concentric with the projection axis 3 and the projection axis, so that the light source unit 1 can be installed at a position coinciding with the projection axis. Reference numeral 7 denotes a socket mounting plate provided on the front surface of the rear case 4 containing the transformer 6 and also serving as a lid of the case 4. The socket 5 of the light source unit 1 is swung on a socket mounting board 7 by an elastic supporting means including a leaf spring 8 or the like so that the projection axis of the projection lens system 2 and the optical axis of the light source unit 1 can coincide with each other. It is provided in. In the case of the embodiment, the leaf spring 8 has a planar shape as shown in FIG.
d is fixed to the socket mounting board 7 integrally by a fixing screw 13 inserted through the mounting hole 8a, and the supporting spring portion 8b is curved and fixed to the front surface of the socket 5 by a fixing screw 14 inserted through the mounting hole 8c. It is composed. As shown in FIG. 5, the socket mounting board 7 has a mounting hole 7a in alignment with the mounting hole 8a of the leaf spring 8, and a power cable insertion through which the transformer 6 and the socket 5 are loosely connected. The hole 7b is provided at an angle.

The socket mounting board 7 has mounting holes 9 at concentric positions at 90-degree angular intervals about the light projecting axis O, and has a mounting angle of 90 degrees on the front surface of the rear case 4. It is detachably attached by a fixing means such as a fixing screw so as to be freely convertible. Reference numeral 10 denotes a front case composed of a lens barrel 3 having the projection lens system 2 and a lamp house 11 that covers the periphery of the light source unit 1, and is attached to the rear case 4 so as to be freely divided. In the case of the embodiment, as shown in FIG. 5, the dividable mounting means is provided on the socket mounting plate 7 at a position symmetrical with respect to the light emitting axis O at a point symmetrical with a large hole portion continuous in an arc shape. A mounting hole 15 comprising a hole portion and an arc-shaped guide groove 16 are provided, while a hook-shaped fitting hook member 17 and a guide projection 18 are provided at a position adjacent to the socket mounting board 7 of the lamp house 11. The engaging hook member 17 is engaged with the mounting hole 15 and the guiding protrusion 18 is engaged with the guiding groove 16, and the rotation operation is performed forward and reverse around the light emitting axis O in the fixed direction or the detaching direction. It is constituted so that it can be fixed detachably.

In the lamp house 11, the projection optical axis of the light source unit 1 is regulated so as to coincide with the optical axis of the projection lens system 2 by contacting the outer frame 1a of the reflector of the light source unit 1. A regulation frame 20 is provided. The restricting frame 20 includes a restricting frame portion that matches and abuts the concentric outer frame portion 1a centered on the optical axis of the projection lens system 2. In addition, the regulation frame 20
The lamp house may be formed integrally with the lamp house by using a heat-resistant synthetic resin. Alternatively, the lamp house may be formed as a heat-resistant metal or synthetic resin part, and may be integrally attached to the lamp house during assembly.

A lamp house 1 for covering the light source 1
In FIG. 1, cooling holes 21 are provided between the fin-shaped portions 19 of the lamp house that cover the light source unit 1 from above and below. On the other hand, when the cooling holes 21 are located on the left and right depending on how the rear case 4 is attached to the ceiling surface, wall surface, or the like, as described above, the front case 10 including the lamp house 11 is projected. By changing the mounting angle around the optical axis by 90 degrees and mounting it on the rear case 4, the cooling holes 21 can be set up and down to increase the cooling effect. In addition, reference numeral 12 denotes a framing knob of a framing device provided at the focal position of the projection lens system 2, which can variably adjust the shape, pattern, and the like of the projected image of the spotlight.
Reference numeral 22 denotes a supporting column for supporting the rear case 4. The supporting column 22 can be bent up and down by loosening the thumb nut 23, and has an axial center with respect to a fixed base 24 that fixes the supporting column 22 to a ceiling or the like. It is configured so that it can rotate around to set the projection direction. Also, 25
Is a light shielding plate provided around the light source unit 1, and 26 is a fixing screw thereof.

The use of the spotlight according to the present invention having the above-described structure will be described.
5 is rotated counterclockwise around the light projecting axis O as shown in FIG. 5, the hook-shaped fitting hook member 17 protruding from the lamp house 11 of the front case 10 The mounting hole 15 can be moved from the previously engaged small hole portion to the large hole portion, pulled forward along the light projection axis to release the engagement, and can be divided. In the split state, the fitting hook member 17 of the lamp house 11 is fitted into the large hole of the mounting hole 15 of the socket mounting board 7 and rotated clockwise to engage with the small hole and fix. And
At this time, the outer frame 1a of the reflector of the light source unit 1 in which the socket 5 is resiliently supported in a swinging manner by the leaf spring 8 is attached to the regulating frame 20 in the lamp house 11. And the projection optical axis of the light source unit 1 is regulated to coincide with the optical axis of the projection lens system 2.
A clear projected image can be obtained.

When the support 22 of the rear case 4 is horizontally mounted on a wall or the like and the thumb nut 23 is loosened to adjust the light projection direction to the left or right, the cooling hole 21 of the lamp house 11 is In such a case, the front case 10 is divided, and in such a case, the concentric positions of the four corners of the socket mounting plate 7 at an angular interval of 90 degrees with respect to the light projecting axis O as a center. A fixing means such as a fixing screw which is screwed into the mounting hole 9 is detached, and the mounting angle of the socket mounting plate 7 is changed at an angle of 90 degrees with respect to the front surface of the rear case 4 so that the fixing screw or the like is removed. When the lamp house 11 is re-fixed by the fixing means and the lamp house 11 is mounted on the socket mounting board 7 again, the cooling holes 21 can be converted and installed so as to face up and down.

[0012]

As described above, according to the spotlight of the present invention having the above-described configuration, a rear case having a light source unit integrally provided with a bulb at the center of a reflecting mirror, and a front case having a projection lens system are provided. In a spotlight provided so that it can be divided freely, while the socket of the light source unit is swingably provided on the socket mounting plate of the rear case by the elastic support means,
A lamp house that covers the light source unit is provided in the front case, and a projection optical axis of the light source unit is regulated in the lamp house so as to coincide with an optical axis of the projection lens system by contacting a reflecting mirror of the light source unit. Since it has a configuration provided with a regulating frame, when the divided rear case and the front case are assembled, the reflecting mirror of the light source unit having the socket oscillated by the elastic support means on the socket mounting board of the rear case, A rear case having a light source unit, because the projection optical axis of the light source unit is in contact with the optical axis of the projection lens system, because the projection optical axis of the light source unit is in contact with a regulating frame in the lamp house provided to cover the light source unit of the front case. In a spotlight in which a front case having a projection lens system is provided so as to be splittable, the optical axes of the spotlight before and after splitting and assembling coincide with each other, so that a clear projected image of the spotlight can be obtained.

Further, according to the present invention, in the above spotlight, when the socket of the light source unit is divided by supporting the socket of the light source unit by a plate spring with a plate spring,
In addition to supporting the socket safely, at the time of assembly, the reflector provided in the socket resiliently abuts the regulating frame in the lamp housing of the front case, and the projection optical axis of the light source unit has a simple structure and the light of the projection lens system. In addition to the effect of ensuring alignment with the axis, there is also a cooling effect of dissipating heat generated by the light source unit. . Furthermore, the present invention provides a front case provided with a lamp house having cooling holes provided above and below the light source unit, which can be mounted on the rear case by changing the mounting angle by 90 degrees around the projection optical axis. When adjusting the light projection direction to the left or right by mounting the light on a wall or the like, the cooling holes may be located on the left and right of the light source, and a sufficient cooling effect cannot be obtained. The front case has a configuration in which the mounting angle can be changed by 90 degrees around the projection optical axis with respect to the object to be projected, so that the cooling holes are always arranged so as to face up and down. This eliminates the need for a considerably large cooling fan required to cool the heat generated by the light source in a conventional spotlight, and eliminates its space. There is an effect of providing a door.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal front view showing a use mode of an embodiment of a spotlight according to the present invention.

FIG. 2 is a left side view thereof.

FIG. 3 is a partially cross-sectional plan view schematically showing the main part thereof.

FIG. 4 is a front view of the main part.

FIG. 5 is a side view of another main part.

FIG. 6 is a development view showing another embodiment of the main part in an expanded manner.

[Description of Signs] 1 ... Light source 2 ... Projection lens system 3 ... Barrel 4 ... Back case 5 ... Socket 6 ... Transformer 7 ... · Socket mounting board 8 ··· Leaf spring 9 ··· Mounting hole 10 ················································································ ··· Mounting holes 16 ··· Guide grooves 17 ··· Hook members 18 ··· Guide projections 19 ··· Fin-shaped portions 20 ··· Restriction frames 21 ··· Cooling holes 22 ··· Posts 23 · ..Screw nut 24 ... Fixed base 25 ... Light shield plate 26 ... Fixed screw

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F21M 1/00 F21M 7/00

Claims (3)

(57) [Claims] 1. A spotlight comprising a rear case having a light source unit integrally provided with a light bulb at the center of a reflector and a front case provided with a projection lens system. A lamp housing for covering the light source unit is provided in the front case while the lamp housing is provided in the front case in a swinging manner by the elastic support means. A spotlight provided with a regulating frame for regulating the projection optical axis to coincide with the optical axis of the projection lens system. 2. The spotlight according to claim 1, wherein the socket of the light source section is swingably supported on the socket mounting board by a leaf spring. 3. A spotlight comprising a rear case having a light source unit integrally provided with a light bulb at the center of a reflector and a front case provided with a projection lens system, wherein the front case is provided with the light source unit. And a cooling hole is provided in the lamp house portion that covers the top and bottom of the light source unit, and the front case equipped with the lamp house is attached to the rear case by changing the mounting angle by 90 degrees around the projection optical axis. Spotlights provided as possible.